Adjustable connecting rod device

Abstract

The utility model discloses an adjustable connecting rod device, the adjustable connecting rod device comprises a rubber node, a connecting rod body, a locking sheath and a taper pin metal spherical hinge, the upper end of the connecting rod body is provided with an upper end hole, and the rubber node is assembled in the upper end hole; the lower end of the connecting rod body is in threaded connection with the taper pin metal spherical hinge, and the taper pin metal spherical hinge occupies a small space; and the locking sheath is fastened through a bolt and a nut. The rubber node is assembled at the upper end, so that the assembly process is simplified, and the use reliability is high. And moreover, the rubber node is simpler and more durable, is stable and reliable within the service life, and has no abnormal sound condition. The taper pin metal spherical hinge is assembled at the lower end and connected with the torsion bar device of the bogie, and the assembly structure is small in occupied space, can meet the limit requirement of a standard subway B-type vehicle, and can be used for all standard subways.

Description

Technical Field

[0001] The utility model relates to a connecting rod device for a subway bogie, in particular to an adjustable connecting rod device. Background Art

[0002] With the continuous development of urban transportation, the subway, as an important part of urban rail transportation, has attracted more and more attention to its safety and maintainability.

[0003] The adjustable connecting rod components used in subway bogies at present (such as Figure 1 As shown in the figure, rod body 1 and rod body 2 are generally connected by threads, and the assembly distance is adjusted by threads. The bolts clamp the locking sleeve to lock the threaded part of the rod body, thereby playing a fixing role. In addition, the upper and lower bearings of the adjustable connecting rod assembly adopt a double-ear structure; and the lower and upper bearings of the adjustable connecting rod assembly are self-lubricating spherical bearings, which are fixed in the upper and lower holes of the connecting rod by a bonding process, and redundant retaining rings are designed to fix the spherical bearings to avoid axial disengagement of the bearings due to bonding failure. The disadvantages of the current adjustable connecting rod assembly are as follows: (1) The spherical bearings are fixed by a bonding process, and bonding failure during vehicle operation will cause abnormal noise from the connecting rod; (2) The double-ear structure spherical bearings occupy a large space.

[0004] In addition, the connecting rod components currently used in subway bogies also have the disadvantages of being numerous in types, having different interface sizes, occupying a large space, and having poor interchangeability.

[0005] The new B-type vehicle (standard subway 80km B-type vehicle) is mainly to establish the Chinese standard system for subway vehicles and unify the 80km B-type vehicle platform for subway vehicles. It has five major highlights: safer, smarter, lower carbon, more economical and more comfortable. However, the new B-type vehicle has higher requirements on the limit size of the connecting rod for the subway bogie, requiring it to occupy a small space.

[0006] Therefore, it is necessary to design a connecting rod assembly device that is highly maintainable and can meet the limiting dimensions of the new type B vehicle, and also puts forward higher requirements on the maintainability and compatibility of the connecting rod assembly device. Utility Model Content

[0007] In order to solve the shortcomings and deficiencies in the prior art, the utility model discloses an adjustable connecting rod device, which has high maintainability and compatibility and can also be used in new B-type vehicles.

[0008] The technical solution of the utility model is as follows:

[0009] An adjustable connecting rod device comprises a rubber node, a connecting rod body, a locking sleeve and a tapered pin metal ball joint. The upper end of the connecting rod body is provided with an upper end hole, in which the rubber node is assembled; the lower end of the connecting rod body is threadedly connected to the tapered pin metal ball joint, and the locking sleeve is fastened to the threaded connection between the connecting rod body and the tapered pin metal ball joint by bolts and nuts.

[0010] Furthermore, the upper end hole and the rubber node are assembled by interference fit in a press-fit manner.

[0011] Furthermore, the rubber node is connected to the subway car body through bolts.

[0012] Furthermore, the rubber node is a double-ear structure.

[0013] Furthermore, a threaded hole is provided at the lower end of the connecting rod body, and the threaded hole is threadedly connected to the tapered pin metal ball joint.

[0014] Furthermore, the tapered pin metal ball joint is fixed to the torsion bar device of the subway bogie by locking with a nut.

[0015] Furthermore, the connecting rod body is made of low-alloy high-strength structural steel and has a size of 500-550 mm.

[0016] Furthermore, the outer diameter of the ball head of the tapered pin metal ball joint is Φ75 to Φ95 mm.

[0017] The utility model has the following beneficial effects:

[0018] (1) Compared with the existing adjustable connecting rod assembly, the adjustable connecting rod device of the utility model is equipped with a rubber node at the upper end, the assembly process is simplified, and the reliability of use is high. Moreover, compared with the self-lubricating joint bearing structure of the existing adjustable connecting rod assembly, the rubber node is simpler and more durable, stable and reliable during the service life, and no abnormal noise occurs.

[0019] (2) Compared with the existing adjustable connecting rod composition, the adjustable connecting rod device of the utility model is equipped with a tapered pin metal ball joint at the lower end, and the tapered pin metal ball joint is connected to the torsion bar device of the bogie. The assembly structure occupies a small space and can also meet the limit requirements of the standard subway type B car, and can be used for the standard subway type B car.

[0020] (3) The interface sizes of the connecting rods used in current subway bogies are different, which occupies a large space and has poor interchangeability. The adjustable connecting rod device of the utility model can be applied to all standard subway models and has high compatibility.

[0021] (4) The adjustable connecting rod device of the utility model is easy to assemble and quick to maintain, thus saving subsequent maintenance costs and time.

[0022] (5) The adjustable connecting rod device of the utility model has a reasonable design and a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the existing connecting rod composition in the background technology (a) front view; (b) side view;

[0024] Figure 2 It is a schematic diagram of the adjustable connecting rod device of the utility model;

[0025] Figure 3 It is an enlarged view of the assembly of the rubber node and the upper end hole of the connecting rod body;

[0026] Figure 4 It is an enlarged view of the connection between the taper pin metal ball joint and the threaded hole of the connecting rod body;

[0027] Figure 5 This is a schematic diagram of the connection between the adjustable connecting rod device of the utility model and the car body and the bogie;

[0028] Among them, 1. rubber node, 2. connecting rod body, 21. upper end hole, 22. threaded hole, 3. locking sleeve, 4. bolts and nuts, 5. taper pin metal ball joint;

[0029] A. Connected to the vehicle body by bolts;

[0030] B. Fix by locking with nuts;

[0031] C. Anti-roll torsion bar configured on the bogie; C1. Torsion arm. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0033] Reference Figure 2 As shown, the adjustable connecting rod device of this embodiment includes a rubber node 1, a connecting rod body 2, a locking sleeve 3, a bolt and nut 4 and a taper pin metal ball joint 5;

[0034] The upper end of the connecting rod body 2 is provided with an upper end hole 21, and the rubber node 1 is assembled in the upper end hole 21, so the assembly process is simplified and the reliability of use is high.

[0035] Compared with the self-lubricating spherical bearing composed of existing connecting rods, the rubber node 1 has a simple and durable structure, is stable and reliable during its service life, and has no abnormal noise.

[0036] Preferably, the upper end hole 21 and the rubber node 1 are assembled by interference fit in a press-fit manner.

[0037] The longitudinal stiffness of the rubber node 1 is 28 kN / mm, the deflection angle is ≥ ±8°, and the torsion angle is ≥ ±14°.

[0038] The rubber node 1 is a double-ear structure, and is connected to the subway car body at the upper end of the connecting rod body 2.

[0039] The connecting rod body 2 is made of low alloy steel Q355NE, and its length is about 449 mm.

[0040] Among them, the lower end of the connecting rod body 2 is provided with a threaded hole 22, which is threadedly connected with the tapered pin metal ball joint 5; that is, the tapered pin metal ball joint 5 is threaded into the threaded hole 22 and fixed with the locking sleeve 3.

[0041] The threaded hole 22 at the lower end of the connecting rod body 2 is equipped with a taper pin metal ball joint 5, which is connected to the torsion bar device of the subway bogie (the anti-roll torsion bar configured on the bogie). The assembly structure occupies a small space, and the total length after assembly is about 2625mm (i.e. Figure 5 The total length after assembly shown in the figure) can meet the clearance requirements of standard subway type B vehicles.

[0042] The bolt and nut 4 clamps and locks the locking sleeve 3 to the threaded portion (the threaded connection between the lower end of the connecting rod body 2 and the taper pin metal ball joint 5), thereby playing a fixing role.

[0043] The adjustable connecting rod device of this embodiment is subjected to a vertical dynamic load (Fz) during use, which is Fz=±18.6kN under normal working conditions and Fz=±37.2kN under abnormal working conditions.

[0044] like Figure 5 As shown, the upper end of the adjustable connecting rod device of this embodiment is connected to the car body (the rubber node 1 is connected to the car body by bolts A); the lower end of the adjustable connecting rod device of this embodiment is assembled on the torsion arm C1 of the anti-roll torsion bar C configured on the bogie (the tapered pin metal ball joint 5 is fixed on the torsion arm C1 by a nut locking B).

[0045] The above description is only a preferred embodiment of the present invention and does not constitute a limitation on the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An adjustable connecting rod device, characterized in that: The adjustable connecting rod device includes a rubber node, a connecting rod body, a locking sleeve and a tapered pin metal ball joint. The upper end of the connecting rod body is provided with an upper end hole, and the rubber node is assembled in the upper end hole; the lower end of the connecting rod body is threadedly connected to the tapered pin metal ball joint, and the locking sleeve is fastened to the threaded connection between the connecting rod body and the tapered pin metal ball joint by bolts and nuts.

2. An adjustable connecting rod device as claimed in claim 1, characterized in that: The upper end hole and the rubber node are assembled by interference fit in a press-fit manner.

3. An adjustable connecting rod device as claimed in claim 1 or 2, characterized in that: The rubber node is connected to the subway car body through bolts.

4. An adjustable connecting rod device as claimed in claim 1 or 2, characterized in that: The rubber node is a double-ear structure.

5. An adjustable connecting rod device as claimed in claim 1 or 2, characterized in that: A threaded hole is provided at the lower end of the connecting rod body, and the threaded hole is threadedly connected with the taper pin metal ball joint.

6. An adjustable connecting rod device as claimed in claim 1 or 2, characterized in that: The taper pin metal ball joint is fixed on the torsion bar device of the subway bogie through a nut locking.

7. An adjustable connecting rod device as claimed in claim 1 or 2, characterized in that: The connecting rod body is made of low-alloy high-strength structural steel and has a size of 500-550 mm.

8. An adjustable connecting rod device as claimed in claim 1 or 2, characterized in that: The outer diameter of the ball head of the taper pin metal ball joint is Φ75-Φ95 mm.

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